BCOV's Feynman Rule of Quintic 3-folds

I will first review the BCOV's Feynman rule and how it is used to compute the Gromov-Witten potential of the quintic 3-folds. Then I will explain how it is related to the R-matrix action of the localization of the NMSP theory. This is a joint work with Huai-Liang Chang, Jun Li, and Wei-Ping Li.